Design and Synthesis of C6−C8 Bridged Epothilone A
摘要:
A conformationally restrained epothilone A analogue (3) with a short bridge between methyl groups at C6 and C8 was designed and synthesized. Preliminary biological evaluation indicates 3 to be only weakly active (IC50 = 8.5 mu M) against the A2780 human ovarian cancer cell line.
Design and Synthesis of C6−C8 Bridged Epothilone A
作者:Weiqiang Zhan、Yi Jiang、Peggy J. Brodie、David G. I. Kingston、Dennis C. Liotta、James P. Snyder
DOI:10.1021/ol800422q
日期:2008.4.1
A conformationally restrained epothilone A analogue (3) with a short bridge between methyl groups at C6 and C8 was designed and synthesized. Preliminary biological evaluation indicates 3 to be only weakly active (IC50 = 8.5 mu M) against the A2780 human ovarian cancer cell line.
C6-C8 Bridged Epothilones: Consequences of Installing a Conformational Lock at the Edge of the Macrocycle
作者:Weiqiang Zhan、Yi Jiang、Shubhada Sharma、Peggy J. Brodie、Susan Bane、David G. I. Kingston、Dennis C. Liotta、James P. Snyder
DOI:10.1002/chem.201102630
日期:2011.12.23
introduction of a bridge between C6–C8 reduced potency by 25–1000 fold in comparison with natural epothilone D. Tubulin assembly measurements indicate these bridgedepothilone analogues to be mildly active, but without significant microtubule stabilization capacity. Molecular mechanics and DFT energy evaluations suggest the mild activity of the bridged epo‐analogues may be due to internal conformational strain